Instant Egghead - Comets versus Asteroids

If you answered "one of Santa's reindeer" and "a popular video game from the '80s"--this episode of Instant Egghead is for you. Scientific American editor John Matson explains how our favorite space rocks differ.

If you answered "one of Santa's reindeer" and "a popular video game from the '80s"--this episode of Instant Egghead is for you. Scientific American editor John Matson explains how our favorite space rocks differ.

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Subscribe Now!Instant Egghead - Comets versus AsteroidsIf you answered "one of Santa's reindeer" and "a popular video game from the '80s"--this episode of Instant Egghead is for you. Scientific American editor John Matson explains how our favorite space rocks differ.

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